Integrated Scheduling for Steelmaking Continuous Casting— Hot Rolling Processes considering Hot Chain Logistics

Abstract

Steelmaking continuous casting (SCC)—hot rolling (HR) is a key process in the production of steel products. It is also a process with large energy consumption. Energy saving has always been an important goal of production scheduling of this process. In this paper, aiming at integrated scheduling optimization for SCC-HR processes, energy saving objective is converted to minimize waiting time of slabs in slab yard, so as to reduce slab temperature loss and achieve the goal of saving energy. An integrated two-stage mathematical programming model is established for the above problems, and a hybrid algorithm of genetic algorithm and linear programming is designed for the integrated model. The correctness of the model and the validity of the algorithm are verified by computational experiments using simulated instances.

Sustainable Scheduling of the Production in the Aluminum Furnace Hot Rolling Section with Uncertain Demand

“…Therefore, more attention will be focused on improving the optimization algorithm and improving the solving efficiency of the production scheduling model in the aluminum furnace hot rolling section in future research. Fortunately, the intelligent optimization algorithm [15,21,22,26,27] proposed by similar research works have provided excellent references.…”

“…Peng et al [25] considered deducing the heating energy and the rolling energy during modeling in the iron and steel industry. Wang et al [26] formulated an integrated scheduling problem for steelmaking continuous casting hot rolling processes as an integrated two-stage mathematical programming model. Ding et al [27] presented a multi-objective optimization method for furnace temperature setting so as to obtain a reasonable heating process temperature of a slab in the furnace.…”

“…(1) To the best of our knowledge, the existing studies focus on the production scheduling of furnace hot rolling section in the iron and steel industry [10,[15][16][17][18][19][20][21][22][23][24][25][26][27]. A few scholars such as De Ladurantaye et al [28] discussed the production scheduling of furnace hot rolling section in the aluminum industry, but this research field has received rather limited attention in the scientific literature.…”

“…The results come from the following aspects. Firstly, to tackle the scheduling problem in the furnace hot rolling section, most research concentrates on the iron and steel industry [10,[15][16][17][18][19][20][21][22][23][24][25][26][27], and the aluminum industry is hardly considered in the literature [28]. Even if the aluminum and steel industries have similar production processes, which also have different characteristics, the two types of production cannot be treated as the same.…”

Effect of bubble size and spatial distribution on the flow and mixing of steel

“…Thus achieving the goal of improving the mechanical properties of steel without introducing new impurities, which is conducive to the production of clean steel [2]. Additionally, it improves the steel’s fluidity and prepares it for subsequent continuous casting [3]. Consequently, it is becoming increasingly vital to study the efficient mixing of steel by bubbles and enhance its efficiency.…”